feat: member portal Sprint 4 — Events + RSVP

- Event + EventRsvp models + migration (RsvpStatus enum: GOING/MAYBE/NOT_GOING)
- EventsModule: admin CRUD (create/update/delete/publish) + RSVP list
- GET /my/events + POST /my/events/:id/rsvp in MyController/MyService
- Admin BFF routes: GET/POST /api/admin/events, PATCH/DELETE /api/admin/events/[id]
- Member BFF routes: GET /api/my/events, POST /api/my/events/[id]/rsvp
- /my/events page: upcoming/past split, RSVP button (client component, optimistic)
- Register DigestModule, OrgModule, ThreadsModule, EventsModule in AppModule
- Add EVENT_CREATED/DELETED/UPDATED and DIGEST_SENT to AuditAction

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/api/src/modules/my/my.controller.ts

@@ -34,6 +34,20 @@ export class MyController {
     return this.service.getDigests(member.tenantId);
   }
 
+  @Get('events')
+  listEvents(@CurrentMember() member: MemberJwtPayload) {
+    return this.service.listEvents(member.sub, member.tenantId);
+  }
+
+  @Post('events/:id/rsvp')
+  rsvp(
+    @CurrentMember() member: MemberJwtPayload,
+    @Param('id') eventId: string,
+    @Body() body: { status: 'GOING' | 'NOT_GOING' | 'MAYBE'; note?: string },
+  ) {
+    return this.service.upsertRsvp(member.sub, member.tenantId, eventId, body.status, body.note);
+  }
+
   @Get('profile')
   profile(@CurrentMember() member: MemberJwtPayload) {
     return this.service.getProfile(member.sub, member.tenantId);